Yes, there are SAT study materials that offer feedback on essays written for the SAT Essay section.

Online SAT Prep Courses:
- Online SAT prep courses such as Khan Academy and Princeton Review offer study materials that include practice essay prompts and provide feedback on essays.
- These courses typically have a team of experienced tutors who review the essays and provide detailed feedback on areas that need improvement.
- The feedback may include suggestions on how to strengthen the thesis statement, improve organization and structure, enhance argument development, and enhance grammar and vocabulary usage.

Writing Guidebooks:
- Writing guidebooks specifically designed for the SAT Essay section are also available.
- These guidebooks provide detailed instructions on how to approach the essay prompt, develop a strong thesis statement, and structure the essay effectively.
- They also include sample essays with annotations and explanations, which can help students understand the elements of a high-scoring essay.

Online Writing Resources:
- Various online resources provide study materials for the SAT Essay section and offer feedback on essays.
- Websites like EduRev offer SAT Essay practice prompts and provide feedback on submitted essays.
- Students can submit their essays online and receive detailed feedback, including suggestions for improvement in content, structure, and language usage.

Private Tutors:
- Private tutors who specialize in SAT preparation can also provide feedback on essays written for the SAT Essay section.
- These tutors have expertise in the SAT Essay scoring rubric and can offer personalized feedback and strategies to improve essay performance.
- Tutors may review the essays in real-time during tutoring sessions or provide written feedback on the essays submitted by students.

Conclusion:
In conclusion, there are various SAT study materials available that offer feedback on essays written for the SAT Essay section. These materials include online SAT prep courses, writing guidebooks, online writing resources, and private tutors. Utilizing these study materials can help students improve their essay writing skills and ultimately achieve higher scores on the SAT Essay section.