DaSauce

I have a problem with needing to go to the bathroom and school. I am a senior in High School and currently need to pass 2 classes to graduate. My problem is that every single day at around 10:15ish I ALWAYS have to defecate. Now the problem is that the school bathroom is extremely disgusting, the toliet is literally broken, urine all over the toliet seat, feces, you get the idea.

Most of the time I can hold it in until the end of the school day, but once I leave school I am literally running home to use the bathroom, but somedays, and it has been increasing lately, I can't hold it in and I have to leave school early just to use the bathroom at home. This has been causing me to fail my last two period classes, which are the ones I need to graduate. Also, when I have these "I cant hold it any longer" periods, I am extremely sweaty and my intestines start to gargle. My stool is regular, it has formation, etc. The only problem is the TIME I have to use the bathroom, and I've tried almost everything to try and change the time I have to use the bathroom. I've tried eating less, trying my hardest to go before school (which sometimes works, but it's difficult because I generally do not have to go in the morning.) I even went to the extreme, I tried takin laxatives in the afternoon so I can clear my system, but that didn't work so well, because my body didn't react to the laxatives until the next day........in school!

So is there anything I could do to change the time I have to use the bathroom? Any techinques or advice is highly appreciated. Thanks in advance