Use this certificate for two full length practice sessions for the Independent School Entrance Exam (ISEE) at Abacus Educational Enrichment. Abacus has had great success in preparing for ISEE. Their philosophy is simple: don't stress. To keep stress on the family and student to a minimum they: Provide knowledge of the exam, offer private tutoring for the language and math sections as well as the essay and offer many full-length simulated tests on weekends to practice skills and ease tension on the actual test day.