Admission Season Admission facts: 1st-4th grades: $50 fee to apply 5th-11th grades: $175 fee to apply 1st-4th grades: $285 testing fee for CATS (Collaborative Academic Testing Service) 1st grade: $65 for ERB (Educational Records Bureau) AABL (Admission Assessment for Beginning Learners) 2nd-11th grade: $105 for ERB ISEE (Independent School Entrance Examination)