He attended St. Francis of Assisi Elementary School in Springfield, where he played basketball and football.

Ingelsby continued his athletic career at Cardinal O'Hara High School in Springfield from 1965 to 1969.

In his junior season, he played a pivotal role in helping the basketball team win the Philadelphia Catholic League championship, although they fell short in the City Championship to the West Philadelphia High School Speedboys.

He earned recognition as the MVP of the Quaker City Tournament in Philadelphia in 1972 and was also named to the NABC and Big Five All-Star squad that season.

Source[1] This biographical article relating to a United States basketball player, coach, or other figure born in the 1950s is a stub.