<P> Appearing as regulars throughout all five seasons were school staff members Dr. Harold Samuels (William G. Schilling) and Bernadette Meara (Jeannetta Arnette). Dr. Samuels was the blustery, overweight principal of the school . His attitude towards the IHP students was one of ambivalence: on the one hand, Dr. Samuels distrusted the kids (and had a particularly antagonistic relationship with Dennis, and tried to avoid Eric), but at the same time he was proud of their achievements and valued the prestige they brought to the school . He also distrusted the teaching methods of the class's teacher, Charlie Moore (Howard Hesseman), concerned that Charlie's methods--which often involved helping the IHP students branch out of their comfort zones and help them deal with the typical problems of kids their age, as well as using unorthodox methods of teaching the class subject at hand--might distract them too much from their studies . Ms. Meara was the level - headed assistant principal . There was some romantic tension between her and Charlie, although this ultimately came to nothing, and later had a romantic' friendship' with Billy . </P> <P> In the series, the students often faced off against the rival Bronx High School of Science . Also, in every season, the IHP students produced the school musical . Musicals staged by the students included Grease, Little Shop of Horrors, and Hair . A number of someday - famous actors made appearances on the show, including Brad Pitt . </P> <Ul> <Li> Charles P. "Charlie" Moore--Howard Hesseman (1986--1990; Seasons 1--4) </Li> <Li> Billy MacGregor--Billy Connolly (1990--1991; Season 5) </Li> <Li> Harold Samuels--William G. Schilling (1986--1991, Seasons 1--5) </Li> <Li> Bernadette Meara--Jeannetta Arnette (1986--1991, Seasons 1--5) </Li> <Li> Maria Borges--Leslie Bega (1986--1989; Seasons 1--3) </Li> <Li> Arvid Engen--Dan Frischman (1986--1991, Seasons 1--5) </Li> <Li> Darlene Merriman--Robin Givens (1986--1991, Seasons 1--5) </Li> <Li> Simone Foster--Khrystyne Haje (1986--1991, Seasons 1--5) </Li> <Li> Jawaharlal Choudhury--Jory Husain (aka Joher Coleman) (1986--1989; Seasons 1--3) </Li> <Li> Alan Pinkard--Tony O'Dell (1986--1991, Seasons 1--5) </Li> <Li> Eric Mardian--Brian Robbins (1986--1991, Seasons 1--5) </Li> <Li> Sarah Nevins--Kimberly Russell (1986--1991, Seasons 1--5) </Li> <Li> Dennis Blunden - Dan Schneider (1986--1991, Seasons 1--5) </Li> <Li> Janice Lazarotto--Tannis Vallely (1986--1989; Seasons 1--3, guest in Season 5) </Li> <Li> Alex Torres--Michael DeLorenzo (1989--1991; Seasons 4--5) </Li> <Li> Viki Amory--Lara Piper (1989--1991; Seasons 4--5) </Li> <Li> Theola June "T.J." Jones--Rain Pryor (1988--1991; Seasons 3--5) </Li> <Li> Jasper Kwong--Jonathan Ke Quan (1990--1991; Season 5) </Li> <Li> Aristotle McKenzie--De'voreaux White (1989--1991; Seasons 4--5) </Li> </Ul> <Li> Charles P. "Charlie" Moore--Howard Hesseman (1986--1990; Seasons 1--4) </Li>

Who played tj on head of the class