Nann Ashford remembers all too clearly the heart-wrenching mornings she endured sending her son off to preschool.

"I would have to put him on the bus and buckle him in," Ashford, of Traverse City, Mich., recalls of bidding her son, Alex, goodbye. "He was crying and I would have to leave him on the bus crying. It was horrible."

Teachers told Ashford that her son was fine once he arrived, but she still felt uneasy about the situation. "At home he wouldn't talk about [what he did at preschool] and that scared me," she says.

She also couldn't ignore her son's behavior at daycare later in the day. "He wouldn't nap and he was disruptive," she says, adding that his exhaustion made for chaotic evenings at home.

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