That is going to change shortly, but just how involved Notre Dame will be remains to be seen.
"I don't know how hard Notre Dame is recruiting me, but I am a little (interested) in them," Thompson said. "I'm interested in the football and hearing about their school. I was trying to look stuff up in class, but I had to get off the computer."
The 6-foot-1, 180-pound Thompson is Scout.com's No. 1-rated safety in the 2012 class, but recently pulled back on his recruitment after a confusing week-long stretch in March in which he committed to California, then re-opened his recruitment.
The Irish visited Thompson recently, but he isn't sure of their interest level.
"Notre Dame came two weeks," he said. "Some of the Notre Dame coaches call me and email me. They call me every now and again, but not frequently."
"I haven't been on my phone and talking to many people," he said. "Things are open. I don't have anything planned. Just football (practice), and a camp Sunday at Stanford."
After attending the camp at Stanford, Thompson said "I'm going to start picking it up" again in regards to his recruitment.
However, he isn't going to make a decision any time soon as he lets the recruiting process play out. He also isn't thinking about which schools he will visit.
"I'm not going to worry about that until after the season," Thompson said. "I'm going to take all five."
His brother, Syd'Quan Thompson, was a standout cornerback at Cal, which bred speculation Shaquille will remain close to home. And Cal is about an hour from Sacramento.
So, does location matter in Thompson's decision?
"A little bit because I know I'm going to get homesick," he said, "but not really that much."