3 knowing the abstinence is the only 100% sure way to prvent pregnancy

Both abstinence and outercourse are simple, free, and work really well to prevent pregnancy. In fact, abstinence is the only 100% effective way to avoid pregnancy. And outercourse really lowers your risk a lot. There are other benefits of abstinence.

you would have a std. i hope this .

i don't think so because different teachers have different materials. tehy teach differently, unless you know for sure your teacher is the exact same as others. i would just contact ur teacher