Table AA12
Number of Children Served Under IDEA by Disability and Age Group
During School Years 1990-91 through 1999-2000 School Years
Age Groups 0-2, 3-5, 3-21

  1990-91 1991-92 1992-93 1993-94 1994-95
AGE GROUP 0-2 50,924 145,313 145,179 152,287 165,351
AGE GROUP 3-5 394,766 420,403 455,449 491,685 522,709
AGE GROUP 3-21 4,756,517 4,920,227 5,081,023 5,271,044 5,430,220

Data from 1990-91 through 1993-94 for all age groups include children with disabilities served
under Chapter 1 of ESEA (SOP). Beginning in 1994-95, all services to children and youth with
disabilities were provided only through IDEA, Parts B and C. Infants and toddlers were first
served under Part C in 1987-88; however, the data collection was unreliable in the early years
of the program. Consequently, counts of children served under Part C are included in the
totals presented only for 1991-92 forward.
Reporting on autism and traumatic brain injury was required under IDEA beginning in 1992-93 and was
optional in 1991-92. States had the option of reporting children ages 3-9 under developmental delay beginning in 1997-98.
Data based on the December 1, 1999 count, updated as of September 25, 2000.
U.S. Department of Education, Office of Special Education Programs, Data Analysis System (DANS).

 

 
Table AA12
Number of Children Served Under IDEA by Disability and Age Group
During School Years 1990-91 through 1999-2000 School Years
Age Groups 0-2, 3-5, 3-21

  1995-96 1996-97 1997-98 1998-99 1999-2000
AGE GROUP 0-2 177,286 186,527 196,337 189,462 203,488
AGE GROUP 3-5 548,593 557,070 570,315 573,645 588,300
AGE GROUP 3-21 5,627,544 5,787,842 5,967,300 6,113,529 6,272,007

Data from 1990-91 through 1993-94 for all age groups include children with disabilities served
under Chapter 1 of ESEA (SOP). Beginning in 1994-95, all services to children and youth with
disabilities were provided only through IDEA, Parts B and C. Infants and toddlers were first
served under Part C in 1987-88; however, the data collection was unreliable in the early years
of the program. Consequently, counts of children served under Part C are included in the
totals presented only for 1991-92 forward.
Reporting on autism and traumatic brain injury was required under IDEA beginning in 1992-93 and was
optional in 1991-92. States had the option of reporting children ages 3-9 under developmental delay beginning in 1997-98.
Data based on the December 1, 1999 count, updated as of September 25, 2000.
U.S. Department of Education, Office of Special Education Programs, Data Analysis System (DANS).

 

 
Table AA12
Number of Children Served Under IDEA by Disability and Age Group
During School Years 1990-91 through 1999-2000 School Years
Age Group 6-11

DISABILITY 1990-91 1991-92 1992-93 1993-94 1994-95
SPECIFIC LEARNING DISABILITIES 922,444 960,876 997,580 1,009,541 1,041,816
SPEECH OR LANGUAGE IMPAIRMENTS 875,618 882,392 888,935 900,962 905,223
MENTAL RETARDATION 214,884 218,247 209,487 220,301 229,453
EMOTIONAL DISTURBANCE 140,172 141,708 137,269 140,603 144,595
MULTIPLE DISABILITIES 50,595 50,124 52,472 55,073 43,889
HEARING IMPAIRMENTS 29,013 29,780 29,363 31,178 31,464
ORTHOPEDIC IMPAIRMENTS 26,457 27,773 29,138 31,644 33,521
OTHER HEALTH IMPAIRMENTS 28,297 29,292 33,487 43,493 56,856
VISUAL IMPAIRMENTS 11,347 11,635 11,210 11,723 11,557
AUTISM . 3,046 8,914 11,158 13,716
DEAF-BLINDNESS 651 608 554 564 524
TRAUMATIC BRAIN INJURY . 79 1,507 2,111 2,871
DEVELOPMENTAL DELAY . . . . .
ALL DISABILITIES 2,299,478 2,355,560 2,399,916 2,458,351 2,515,485

Data from 1990-91 through 1993-94 for all age groups include children with disabilities served
under Chapter 1 of ESEA (SOP). Beginning in 1994-95, all services to children and youth with
disabilities were provided only through IDEA, Parts B and C. Infants and toddlers were first
served under Part C in 1987-88; however, the data collection was unreliable in the early years
of the program. Consequently, counts of children served under Part C are included in the
totals presented only for 1991-92 forward.
Reporting on autism and traumatic brain injury was required under IDEA beginning in 1992-93 and was
optional in 1991-92. States had the option of reporting children ages 3-9 under developmental delay beginning in 1997-98.
Data based on the December 1, 1999 count, updated as of September 25, 2000.
U.S. Department of Education, Office of Special Education Programs, Data Analysis System (DANS).

 

 
Table AA12
Number of Children Served Under IDEA by Disability and Age Group
During School Years 1990-91 through 1999-2000 School Years
Age Group 6-11

DISABILITY 1995-96 1996-97 1997-98 1998-99 1999-2000
SPECIFIC LEARNING DISABILITIES 1,073,215 1,093,857 1,114,458 1,119,501 1,118,152
SPEECH OR LANGUAGE IMPAIRMENTS 910,788 928,942 939,430 946,795 958,182
MENTAL RETARDATION 235,490 239,286 240,706 240,229 238,714
EMOTIONAL DISTURBANCE 147,368 150,401 154,034 157,622 159,879
MULTIPLE DISABILITIES 46,150 48,489 51,039 49,635 51,312
HEARING IMPAIRMENTS 32,501 32,923 33,251 33,716 33,847
ORTHOPEDIC IMPAIRMENTS 34,530 35,574 35,668 36,013 36,811
OTHER HEALTH IMPAIRMENTS 71,649 84,868 97,861 110,868 124,464
VISUAL IMPAIRMENTS 11,870 11,843 12,088 12,095 12,558
AUTISM 17,666 21,669 27,342 35,142 43,039
DEAF-BLINDNESS 547 489 548 650 904
TRAUMATIC BRAIN INJURY 3,929 4,106 4,528 4,878 5,219
DEVELOPMENTAL DELAY . . 3,792 11,907 19,304
ALL DISABILITIES 2,585,703 2,652,447 2,715,648 2,759,051 2,802,385

Data from 1990-91 through 1993-94 for all age groups include children with disabilities served
under Chapter 1 of ESEA (SOP). Beginning in 1994-95, all services to children and youth with
disabilities were provided only through IDEA, Parts B and C. Infants and toddlers were first
served under Part C in 1987-88; however, the data collection was unreliable in the early years
of the program. Consequently, counts of children served under Part C are included in the
totals presented only for 1991-92 forward.
Reporting on autism and traumatic brain injury was required under IDEA beginning in 1992-93 and was
optional in 1991-92. States had the option of reporting children ages 3-9 under developmental delay beginning in 1997-98.
Data based on the December 1, 1999 count, updated as of September 25, 2000.
U.S. Department of Education, Office of Special Education Programs, Data Analysis System (DANS).

 

 
Table AA12
Number of Children Served Under IDEA by Disability and Age Group
During School Years 1990-91 through 1999-2000 School Years
Age Group 12-17

DISABILITY 1990-91 1991-92 1992-93 1993-94 1994-95
SPECIFIC LEARNING DISABILITIES 1,115,445 1,176,035 1,252,188 1,296,829 1,347,294
SPEECH OR LANGUAGE IMPAIRMENTS 108,144 112,136 104,904 112,581 110,859
MENTAL RETARDATION 264,624 266,240 258,619 269,321 279,214
EMOTIONAL DISTURBANCE 229,093 236,431 242,319 251,524 260,891
MULTIPLE DISABILITIES 35,014 36,210 38,368 42,083 34,231
HEARING IMPAIRMENTS 25,622 26,335 26,966 29,037 29,545
ORTHOPEDIC IMPAIRMENTS 18,812 19,593 19,594 21,321 23,069
OTHER HEALTH IMPAIRMENTS 24,177 25,701 29,150 35,886 46,054
VISUAL IMPAIRMENTS 10,350 10,530 10,641 11,357 11,445
AUTISM . 1,749 4,893 5,832 6,760
DEAF-BLINDNESS 587 594 599 585 600
TRAUMATIC BRAIN INJURY . 127 1,844 2,559 3,486
ALL DISABILITIES 1,831,868 1,911,681 1,990,085 2,078,915 2,153,448

Data from 1990-91 through 1993-94 for all age groups include children with disabilities served
under Chapter 1 of ESEA (SOP). Beginning in 1994-95, all services to children and youth with
disabilities were provided only through IDEA, Parts B and C. Infants and toddlers were first
served under Part C in 1987-88; however, the data collection was unreliable in the early years
of the program. Consequently, counts of children served under Part C are included in the
totals presented only for 1991-92 forward.
Reporting on autism and traumatic brain injury was required under IDEA beginning in 1992-93 and was
optional in 1991-92. States had the option of reporting children ages 3-9 under developmental delay beginning in 1997-98.
Data based on the December 1, 1999 count, updated as of September 25, 2000.
U.S. Department of Education, Office of Special Education Programs, Data Analysis System (DANS).

 

 
Table AA12
Number of Children Served Under IDEA by Disability and Age Group
During School Years 1990-91 through 1999-2000 School Years
Age Group 12-17

DISABILITY 1995-96 1996-97 1997-98 1998-99 1999-2000
SPECIFIC LEARNING DISABILITIES 1,398,602 1,447,496 1,500,946 1,551,715 1,608,645
SPEECH OR LANGUAGE IMPAIRMENTS 111,833 115,352 119,503 122,570 126,724
MENTAL RETARDATION 286,953 291,672 297,657 303,278 308,802
EMOTIONAL DISTURBANCE 267,786 271,230 275,106 278,936 283,934
MULTIPLE DISABILITIES 36,365 38,776 41,902 44,123 47,010
HEARING IMPAIRMENTS 30,983 31,259 31,727 32,220 32,900
ORTHOPEDIC IMPAIRMENTS 24,591 26,528 27,482 28,866 29,921
OTHER HEALTH IMPAIRMENTS 57,714 71,133 86,677 103,018 120,938
VISUAL IMPAIRMENTS 11,864 12,072 12,033 12,004 12,044
AUTISM 8,796 10,078 12,211 15,479 18,392
DEAF-BLINDNESS 619 535 655 722 686
TRAUMATIC BRAIN INJURY 4,558 5,182 6,045 6,604 7,138
ALL DISABILITIES 2,240,664 2,321,313 2,411,944 2,499,535 2,597,134

Data from 1990-91 through 1993-94 for all age groups include children with disabilities served
under Chapter 1 of ESEA (SOP). Beginning in 1994-95, all services to children and youth with
disabilities were provided only through IDEA, Parts B and C. Infants and toddlers were first
served under Part C in 1987-88; however, the data collection was unreliable in the early years
of the program. Consequently, counts of children served under Part C are included in the
totals presented only for 1991-92 forward.
Reporting on autism and traumatic brain injury was required under IDEA beginning in 1992-93 and was
optional in 1991-92. States had the option of reporting children ages 3-9 under developmental delay beginning in 1997-98.
Data based on the December 1, 1999 count, updated as of September 25, 2000.
U.S. Department of Education, Office of Special Education Programs, Data Analysis System (DANS).

 

 
Table AA12
Number of Children Served Under IDEA by Disability and Age Group
During School Years 1990-91 through 1999-2000 School Years
Age Group 18-21

DISABILITY 1990-91 1991-92 1992-93 1993-94 1994-95
SPECIFIC LEARNING DISABILITIES 106,128 110,093 116,719 121,295 121,114
SPEECH OR LANGUAGE IMPAIRMENTS 4,016 4,376 4,210 4,442 4,248
MENTAL RETARDATION 71,949 68,775 64,256 64,197 61,850
EMOTIONAL DISTURBANCE 21,499 22,072 22,064 22,824 22,563
MULTIPLE DISABILITIES 12,020 12,074 12,439 12,561 11,500
HEARING IMPAIRMENTS 4,576 4,612 4,287 4,450 4,195
ORTHOPEDIC IMPAIRMENTS 4,071 4,023 3,856 3,887 3,877
OTHER HEALTH IMPAIRMENTS 3,875 3,756 3,426 3,700 4,223
VISUAL IMPAIRMENTS 1,985 1,918 1,693 1,724 1,711
AUTISM . 620 1,773 2,068 2,188
DEAF-BLINDNESS 286 225 241 220 207
TRAUMATIC BRAIN INJURY . 39 609 725 902
ALL DISABILITIES 230,405 232,583 235,573 242,093 238,578

Data from 1990-91 through 1993-94 for all age groups include children with disabilities served
under Chapter 1 of ESEA (SOP). Beginning in 1994-95, all services to children and youth with
disabilities were provided only through IDEA, Parts B and C. Infants and toddlers were first
served under Part C in 1987-88; however, the data collection was unreliable in the early years
of the program. Consequently, counts of children served under Part C are included in the
totals presented only for 1991-92 forward.
Reporting on autism and traumatic brain injury was required under IDEA beginning in 1992-93 and was
optional in 1991-92. States had the option of reporting children ages 3-9 under developmental delay beginning in 1997-98.
Data based on the December 1, 1999 count, updated as of September 25, 2000.
U.S. Department of Education, Office of Special Education Programs, Data Analysis System (DANS).

 

 
Table AA12
Number of Children Served Under IDEA by Disability and Age Group
During School Years 1990-91 through 1999-2000 School Years
Age Group 18-21

DISABILITY 1995-96 1996-97 1997-98 1998-99 1999-2000
SPECIFIC LEARNING DISABILITIES 130,087 133,054 139,080 144,448 145,169
SPEECH OR LANGUAGE IMPAIRMENTS 4,263 4,447 4,628 4,787 5,058
MENTAL RETARDATION 63,132 62,644 64,968 67,178 66,917
EMOTIONAL DISTURBANCE 24,011 24,648 25,301 26,212 26,298
MULTIPLE DISABILITIES 12,020 12,175 13,412 14,053 14,671
HEARING IMPAIRMENTS 4,555 4,591 4,704 4,944 4,924
ORTHOPEDIC IMPAIRMENTS 4,035 4,240 4,267 4,557 4,690
OTHER HEALTH IMPAIRMENTS 4,798 5,361 6,603 7,947 8,708
VISUAL IMPAIRMENTS 1,756 1,847 1,910 1,997 1,988
AUTISM 2,614 2,628 2,964 3,441 3,993
DEAF-BLINDNESS 221 192 215 240 255
TRAUMATIC BRAIN INJURY 1,092 1,185 1,341 1,494 1,517
ALL DISABILITIES 252,584 257,012 269,391 281,298 284,188

Data from 1990-91 through 1993-94 for all age groups include children with disabilities served
under Chapter 1 of ESEA (SOP). Beginning in 1994-95, all services to children and youth with
disabilities were provided only through IDEA, Parts B and C. Infants and toddlers were first
served under Part C in 1987-88; however, the data collection was unreliable in the early years
of the program. Consequently, counts of children served under Part C are included in the
totals presented only for 1991-92 forward.
Reporting on autism and traumatic brain injury was required under IDEA beginning in 1992-93 and was
optional in 1991-92. States had the option of reporting children ages 3-9 under developmental delay beginning in 1997-98.
Data based on the December 1, 1999 count, updated as of September 25, 2000.
U.S. Department of Education, Office of Special Education Programs, Data Analysis System (DANS).

 

 
Table AA12
Number of Children Served Under IDEA by Disability and Age Group
During School Years 1990-91 through 1999-2000 School Years
Age Group 6-21

DISABILITY 1990-91 1991-92 1992-93 1993-94 1994-95
SPECIFIC LEARNING DISABILITIES 2,144,017 2,247,004 2,366,487 2,427,665 2,510,224
SPEECH OR LANGUAGE IMPAIRMENTS 987,778 998,904 998,049 1,017,985 1,020,330
MENTAL RETARDATION 551,457 553,262 532,362 553,819 570,517
EMOTIONAL DISTURBANCE 390,764 400,211 401,652 414,951 428,049
MULTIPLE DISABILITIES 97,629 98,408 103,279 109,717 89,620
HEARING IMPAIRMENTS 59,211 60,727 60,616 64,665 65,204
ORTHOPEDIC IMPAIRMENTS 49,340 51,389 52,588 56,852 60,467
OTHER HEALTH IMPAIRMENTS 56,349 58,749 66,063 83,079 107,133
VISUAL IMPAIRMENTS 23,682 24,083 23,544 24,804 24,713
AUTISM . 5,415 15,580 19,058 22,664
DEAF-BLINDNESS 1,524 1,427 1,394 1,369 1,331
TRAUMATIC BRAIN INJURY . 245 3,960 5,395 7,259
DEVELOPMENTAL DELAY . . . . .
ALL DISABILITIES 4,361,751 4,499,824 4,625,574 4,779,359 4,907,511

Data from 1990-91 through 1993-94 for all age groups include children with disabilities served
under Chapter 1 of ESEA (SOP). Beginning in 1994-95, all services to children and youth with
disabilities were provided only through IDEA, Parts B and C. Infants and toddlers were first
served under Part C in 1987-88; however, the data collection was unreliable in the early years
of the program. Consequently, counts of children served under Part C are included in the
totals presented only for 1991-92 forward.
Reporting on autism and traumatic brain injury was required under IDEA beginning in 1992-93 and was
optional in 1991-92. States had the option of reporting children ages 3-9 under developmental delay beginning in 1997-98.
Data based on the December 1, 1999 count, updated as of September 25, 2000.
U.S. Department of Education, Office of Special Education Programs, Data Analysis System (DANS).

 

 
Table AA12
Number of Children Served Under IDEA by Disability and Age Group
During School Years 1990-91 through 1999-2000 School Years
Age Group 6-21

DISABILITY 1995-96 1996-97 1997-98 1998-99 1999-2000
SPECIFIC LEARNING DISABILITIES 2,601,904 2,674,407 2,754,484 2,815,664 2,871,966
SPEECH OR LANGUAGE IMPAIRMENTS 1,026,884 1,048,741 1,063,561 1,074,152 1,089,964
MENTAL RETARDATION 585,575 593,602 603,331 610,685 614,433
EMOTIONAL DISTURBANCE 439,165 446,279 454,441 462,770 470,111
MULTIPLE DISABILITIES 94,535 99,440 107,253 107,811 112,993
HEARING IMPAIRMENTS 68,039 68,773 69,685 70,880 71,671
ORTHOPEDIC IMPAIRMENTS 63,156 66,342 67,417 69,436 71,422
OTHER HEALTH IMPAIRMENTS 134,161 161,362 191,141 221,833 254,110
VISUAL IMPAIRMENTS 25,490 25,762 26,031 26,096 26,590
AUTISM 29,076 34,375 42,517 54,062 65,424
DEAF-BLINDNESS 1,387 1,216 1,418 1,612 1,845
TRAUMATIC BRAIN INJURY 9,579 10,473 11,914 12,976 13,874
DEVELOPMENTAL DELAY . . 3,792 11,907 19,304
ALL DISABILITIES 5,078,951 5,230,772 5,396,985 5,539,884 5,683,707

Data from 1990-91 through 1993-94 for all age groups include children with disabilities served
under Chapter 1 of ESEA (SOP). Beginning in 1994-95, all services to children and youth with
disabilities were provided only through IDEA, Parts B and C. Infants and toddlers were first
served under Part C in 1987-88; however, the data collection was unreliable in the early years
of the program. Consequently, counts of children served under Part C are included in the
totals presented only for 1991-92 forward.
Reporting on autism and traumatic brain injury was required under IDEA beginning in 1992-93 and was
optional in 1991-92. States had the option of reporting children ages 3-9 under developmental delay beginning in 1997-98.
Data based on the December 1, 1999 count, updated as of September 25, 2000.
U.S. Department of Education, Office of Special Education Programs, Data Analysis System (DANS).