Peter's reaction could be a mix of annoyance and curiosity. He's in class, trying to learn, and here comes Deadpool disrupting his studies. But at the same time, he knows Deadpool well enough that there must be something important or at least very strange going on. So he might try to answer the call as quietly as possible and find out what's up.
Peter would probably be shocked at first. I mean, getting a call from Deadpool in the middle of class is not an everyday occurrence. He might quickly look around to see if anyone noticed his phone ringing.
Perhaps Peter is a bit annoyed at first. He's trying to focus on class and here's Tony calling. But then when he realizes it might be something important, he starts to pay more attention to the call, all while being cautious not to get caught by the teacher.
One possibility is that Peter gets really flustered. He might be in the middle of paying attention to the teacher when Deadpool calls, and his first reaction could be to try and hush Deadpool. Since Peter is often portrayed as a responsible student, this unexpected call could throw him off his game in class.
Peter could also be a bit annoyed if it's not a good time. For example, if he was really focused on a test or a lesson he was interested in. But still, he'd probably answer because he knows Natasha wouldn't call without a good reason. He might give her a look that says 'this better be important' while trying to listen to what she has to say.
In a fanfiction where Steve calls Peter in class, we might expect some sort of comical moment. For instance, Peter could be daydreaming and Steve's call startles him, causing him to make a funny noise or reaction that amuses the whole class.
Perhaps Steve is calling Peter to warn him about something in class. For example, there could be a surprise test that Peter doesn't know about yet. Steve might be a good friend who wants to give Peter a heads - up so he can be prepared. In fanfiction, this kind of scenario can add an element of friendship and drama within the classroom setting.
This situation in the fanfiction could also be a part of a bigger story arc. Wanda might be calling Peter as part of a plan to form a group within the school, like a secret club of students with special abilities. It could be the first step in bringing together a team that will later face a common enemy or solve a major mystery in the school. The call in class is just the catalyst for what's to come.
One possibility is that Tony calls Peter to discuss an upcoming science project. Maybe they need to work together and Tony wants to plan out their tasks in class so they can start right away after school.
They might be really excited, especially if the fanfiction contains interesting new storylines or character developments that they haven't thought of before.
Some students in Peter's class might be really excited as they get to see new takes on their favorite movie. Others could be a bit confused if the fanfiction is very different from the original story.
Peter would likely be defiant. He has a strong moral compass and wouldn't easily give in to Osborn's demands. He'd probably try to find a way to escape right away, using his spider - abilities like climbing walls and his super strength to break free from any restraints.