By MORIAH BALINGIT BALTIMORE (AP) — Before 19-year-old Davontez Johnson found himself in a preschool classroom at Dorothy I. Heights Elementary, he was a senior at a nearby high school who, like many students his age, was unsure of what he wanted to do with his life. Not in his wildest dreams could he have imagined himself standing on a colorful carpet, leading a gaggle of 4-year-olds in a chant and dance about phonics. “Words have parts — that’s syl-a-bles,” he said, enunciating for effect.