Does anyone have an opinion as to what Catholic High Schools in Nassau or Suffolk County, LI, NY are best?

Answer 1

Nassau and Suffolk Counties are both in the Diocese of Rockville Centre.

I suggest you contact the Education Department of the Diocese of Rockville Centre for standardized test scores:

[e-mail]
phone: [phone]
fax: [phone]

http://www.drvc.org/education.html

With love in Christ.