using an iphone, is there any possible way to get an indication/alert that the person you sent a text message to has either received the message or opened the text message.

Only if you get a hold of his (or her) phone

Only if you have physical access to his/her phone. Other then that, no. The only other way was to trick the plan provider that your his/her parent guardian and get them to send you the activity. Either those, or ask them.