Because she flunked him because he cheated.
Mrs. Logan explains that RW and Melvin have a different relationship with TJ because they see him as a good friend while the rest of the class sees him as someone who caused trouble and got Stacey in trouble. TJ manipulates RW and Melvin by exploiting their trust and friendship to serve his own selfish purposes.
In "Roll of Thunder, Hear My Cry," TJ lied to his father about being helped with answers by Mrs. Logan during a test. This lie led to Mrs. Logan being accused of cheating, resulting in her being fired from her teaching job.
The Logan children had an unbelievable look on their face when TJ told then about the Berry's burning. :D
TJ wants Stacey to sneak into Ms. Logan's room and steal the test answers to help himself and his friends cheat on the upcoming test.
One of the first clues that T.J. is trouble in "Roll of Thunder, Hear My Cry" is when he tries to convince the Logan children to join him in cheating on a test. This shows his willingness to be dishonest and manipulate others.
RW and Melvin wanted TJ to go with them to the mercantile because they believed his presence would make it easier for them to falsely accuse him of stealing. They wanted to frame TJ in order to avoid getting in trouble themselves.
TJ framed Stacey and got her into trouble. He stole money from Miss Gullivan and put the money in Stacey's bag. She was punished and received 3 spankings.
Mr. Jamison shows up at TJ's house in "Roll of Thunder, Hear My Cry" to warn TJ's family about the dangers TJ is facing from the Simms brothers due to TJ getting involved in trouble with them. Mr. Jamison wants to prevent any harm from coming to TJ and his family.
His name is TJ Cummings.
TJ was likely looking for money or items to steal in Mama's room in "Roll of Thunder, Hear My Cry." TJ is known to have sticky fingers and a tendency to steal, so it is plausible that he was searching for valuables. Additionally, TJ may have been seeking information or evidence to use against the Logan family.
TJ is not included in the plan because he is seen as unreliable and untrustworthy by the other children due to his reputation for causing trouble and lying. They do not want to involve him in their secret project because they fear he may betray them or mess things up.
Because they convinced him to go there with them. They were going to get him the pearl handed pistol but the mercantile was closed to they broke in because they didn't want to go back home with nothing. Then they robbed money and knocked out Mr barnett and mrs barnett. Then TJ wants to go home but they wont let him and when TJ threatens to tell everyone that it was them who robbed the mercantile, they beat him up realy bad and throw him in the back of their truck.