- C.P.A., New York
- Candidate for Doctorate in Education, Azrieli Graduate School, Yeshiva University, 2021
- APC– Taxation, Graduate School of Business Administration, New York University, 1979
- MBA with distinction, specialized in Accounting. Recipient of University Scholarship. Elected to Beta Gamma Sigma Scholastic Honor Society, Graduate School of Business Administration, New York University, 1975
- BS cum laude, specialized in Economics. Elected member of Disciplinary Committee. Kirschenbaum Memorial Award. City College of the City University of New York, 1972
As a Tax and Accounting professor for over 10 years and the former Director of the Graduate Tax Program at Sy Syms School of Business of Yeshiva University, Len acquired decades of practical, hands on tax experience in leadership positions at major global businesses, including PwC, Schlumberger Ltd, Citigroup, and most recently with NYSE conglomerate, Griffon Corp, where he was the Vice President of Taxes.