As concern about the developmental progress of preschoolers has increased, the number of assessment instruments available has expanded. This paper reviews recent advances in early childhood assessment and evaluation, and describes several screening and assessment instruments. Varying information is presented for each test, but may include a description, its applications, available training materials, and information on reliability and validity. Screening tests include: (1) "Developmental Indicators for the Assessment of Learning-Revised"; (2) "Early Screening Profiles"; (3) "FirstSTEP: Screening Test for Evaluating Preschoolers"; and (4) "Kaufman Survey of Early Academic and Language Skills." Seven language tests are described, including: (1) "Oral and Written Language Scales"; and (2) "Test de Vocabulario en Imagenes Peabody" (Spanish version of "Peabody Picture Vocabulary Test"). Nine intellectual screening and assessment instruments are described, including: (1) "Kaufman Brief Intelligence Test"; (2) "Mullen Scales of Early Learning"; (3) "Infant-Toddler Developmental Assessment"; (4) "Bayley Scales of Infant Development"; (5) "Wechsler Preschool and Primary Scale of Intelligence-Revised"; and (6) "Kaufman Assessment Battery for Children." Also described is a parent instrument, "Child Development Inventory"; "System to Plan Early Childhood Services"; "Test of Variables of Attention"; and "Behavior Assessment System for Children." The descriptions note which tests have Spanish directions and which are especially appropriate for children with language delays, and briefly describes several resources available on early childhood assessment. (Contains 11 references.) (KDFB)