Congresswoman Alexandria Ocasio-Cortez recalled how her public-school teachers thought she needed “remedial education” because she had grown up speaking Spanish at home. The freshman lawmaker, speaking Saturday at a packed town hall organized by the Jackson Heights People for Public Schools, said, “As a child I spoke Spanish first. … and I went to a school where no one looked like me. I went to a school where teachers thought I needed remedial education because I spoke two languages instead of one.” It wasn’t until she took a “high-stakes” test in which she scored in the 99th percentile across the...