Complex sentence: As of February 2013 the Japanese Weekend School of New Jersey, a Japanese weekend school, holds classes at Paramus Catholic while negotiating with the Paramus Public Schools so it could hold classes at West Brook Middle School.
Split into simpler sentences: As of February 2013 the Japanese Weekend School of New Jersey, a Japanese weekend school, holds classes at Paramus Catholic. During that month the weekend school was negotiating with the Paramus Public Schools so it could hold classes at West Brook Middle School.