Tutors are great for assisting students get caught up. They also help students to gain a better understanding of concepts previously taught. It can be very difficult to move on to the next level of a course when it is not fully understood.
I agree with Ms. Hurn, I think that you should consider getting a tutor this summer. Make sure that your tutor is someone that you feel comfortable with and who is knowledgeable in the subjects that you want to study. I think that it is a great idea to work on your skills during the summer, and I commend you for it.
If your desire is to catch up in subjects that are hard for you, perhaps working with a tutor is the answer. Working one-on-one with a tutor would allow you to have your tutor's complete attention and to focus on exactly the areas of learning where you most want to improve. Many teachers do tutoring in the summer. Placing an ad in your local newspaper might help you find a tutor in the subject or subjects you want to study. Also, you could contact your high school or a local college to find a tutor. In some communities, local youth clubs or organizations offer tutoring services. If there are such clubs in your town, they should be listed in the telephone book. (I'm thinking of such groups as the Boys and Girls Club and the Family Y.) Finally, most communities have an organization of retired teachers. You could check online to see if you can find one in your area, or you could call the local board of education office to inquire. Good luck to you. I admire your dedication in improving your education.
If I understand the question correctly, I think you are enquiring into summer school or continuing on with schooling after a school year has ended. From a student's point of view, I think that this is a great approach to learning and seeing education as something that happens outside of the classroom setting. If this is something you are willing to pursue, I think you need to do a couple of things. The first thing you have to do is determine what courses/ class you wish to take. Ask yourself in your education, which areas would require you to engage in more study. If you know that chemistry, for example, gave you trouble, taking an extra course or two in chemistry would allow you greater familiarity in it and allow you to become more proficient because of the increase in exposure. Hence, I think you might need to engage in some reflection about what courses you wish to take. The second thing I would do is figure out which approach would work well for you: Summer school classes, individual tuition, or online courses. These are but three of many approaches one can take to learning outside of the classroom. Here again, you might need to think of which method works out the best for you. I think there are distinct advantages to each and you will have to figure out which one speaks to your style of learning. Seeing that these classes are outside of the regularly scheduled school year, you have these options. Engaging in this analysis might allow you to identify where improvement is needed and develop this as you develop your life long ability to learn. If this is not what your question was intended to address, please accept my apologies.