Comparison of achievement in half-day, every-day and all-day, alternate-day early childhood programs for handicapped children.
D000124:Achievement; D002675:Child, Preschool; D006233:Persons with Disabilities / Q000193:education*; D004519:Education, Special / Q000379:methods; D005260:Female; D006801:Humans; D008297:Male; D013997:Time Factors