Stacey Strauss has been sentenced to two to five years in prison and five years probation.
Strauss, 41, pleaded guilty to neglect of a dependent care person, involuntary manslaugther, and reckless endangerment.
20-year-old Bryan Nevins died after returning from Sesame Place on July 24, 2010.
Strauss was a counselor for Woods Services at the time.
Prosecutors said she made dozens of phone calls and text messages while Nevins sat for hours in a sweltering van.
Strauss testified that she didn't know she had to watch Nevins.