If the breaker is a 15A, I assume it's not dangerous to install a 20A rated outlet, but it's still not the best idea, and probably not code-compliant, since this receptacle will allow high current devices (12-16A) to be connected on a 15A rated circuit (actually 12A). The breaker will do its job and cut power, but it's better to install a properly rated receptacle.

I just bought these receptacles today at Graybar and I wasn't paying attention to the fact that they are 20 amp. I would only be installing them in my room though. And I know not to plug high-current devices into it. So i guess as long as I make sure nobody else goes in my room and plugs in a high-current device, everything is safe?

Update: I called Graybar and H.D. Supply and neither of them have 15 amp isolated ground receptacles in stock. They would have to order them. So im just gonna install these. It should be fine though cause nobody goes in my room to use my outlets so yeah. These aren't permanent anyways. If we ever move out of this house, ill remove these and put standard receptacles back in.

Yeah, if you can get the 15 amp version that would be better but these could be used safely, though not code compliantly on a 15 amp circuit. Just be sure to connect both the ground screws (or only one if that's how many there are) to the ground wire in the box. If you wouldn't mind taking a picture of the back that would be useful.

Don't these have two grounds on them one for the outlet and another for the outlet strap?

Yes the generally do, I think this may be one of the "self grounding" ones that grounds through the screw and that means it wouldn't need the regular ground, just the isolated ground. I believe those aren't allowed here.

The main purpose of those is to provide a 2nd ground path completely isolated from the rest (i.e. chassis ground made by boxes and cables), being only connected to ground in the breaker panel. Such a configuration may be better for sensitive devices like computer. It must be mentioned that the ground is the part of the electrical system in which all undesired currents go (noise from cable, voltage spikes, etc.). While it shouldn't carry any current, it is in fact a source of horribly noisy and "dirty" current. Normally it goes to ground and doesn't cause any harm, most electrical devices being able to take some with no big deal. But computers and other high-tech electronic equipment may not work properly in some situations, if a large noise source is grounded very close to a computer for example.

Ill post a pic of the back of it. I plan on installing them tomorrow.