Last April, College Achieve Public Schools, known as CAPS, marked its 10-year anniversary with a ritzy celebration at The Chateau Grande in East Brunswick. The gathering at the ornate French-American style banquet center, set among 15 pastoral acres, was to toast a burgeoning charter school network that over a decade had swelled to nine schools and nearly 3,200 students across Plainfield, Paterson, Asbury Park and Neptune. “Over these 10 years, we’ve shown that when we believe in our students, they will flourish,” Michael Piscal, the organization’s founder and CEO, said at the time. The gala a…