SAT

Yes, more or less books are sufficient for SAT Math preparation. However, those who seek more help in terms of preparation can do so by joining some classes offline or online. In case the concepts of the applicant is clear they will be able to prepare from the dedicated SAT Math books. But those who are not ver confident about their concepts and require help in a more extensive manner can go for these classes. 

SAT Math books also have practice, thus, practice is the key to strengthen the weak points. Thus, those who are preparing for SAT Math and have issues with Maths on the whole should begin their preparation earlier on. 

Some of the best books for SAT Math prep are:

• PWN The SAT Math Guide
• 800 Math Workbook by Dr. Jang's SAT
• Barron's SAT Math Workbook
• 500 New SAT Math Problems by Dr. Steve Warner
• Dr John Chung's SAT Math
• SAT Math Workbook

Choose books wisely to prepare for SAT Math section questions. 

Yes, applicants can prepare for Reading and Writing section of SAT exam based on the preparation material offered online. They also have designated authors and people who design prep materials for aspiring students at large. Applicants have the benefit of taking advantage from the already prepared materials and they can also check out testimonials before going ahead with the preparation and or payments.

The best books for SAT Reading and Writing preparation are given below for reference:

• The Ultimate Guide to SAT Grammar by Erica L. Meltzer
• The Critical Reader: The Complete Guide to SAT Reading, 3rd Edition 
• 2018 SAT Reading: World Literature Practice Book

Apart from these the applicants can look for online resources and materials to help support them with their preparation for SAT Reading and Writing section commonly referred to as RW. 

The applicants should also look for mocks and attempt them regularly so that there is enough practice in hand before appearing for the main exam on the set date.

No, it is not required for Indian students to take SAT or ACT if they are applying to the University of Maryland. The university provides test-optional policy, which means it is on students either to submit test scores or not.  

At the University of Iowa, SAT or ACT scores are not required from international applicants who completed secondary school outside the United States. However, SAT or ACT scores are required from first-year applicants who wish to be considered for academic scholarships, Direct Admission to the Tippie College of Business or for the University of Iowa Honors Program. Also, SAT and ACT scores can be used to satisfy Iowa’s English proficiency requirements.

Currently, the following individuals must still submit their SAT or ACT scores:
Those who choose to enroll in the expedited seven-year B.A. or M.D.
Candidates who are homeschooled.
Candidates who attend high schools that donot use a formal grading system and simply offer narrative evaluations. 
(Test is optional for admission periods 2021–2023). Most candidates do not need to take a test to apply to GW as recruited NCAA Division I athletes. When assessing each application, they use a comprehensive method. There is no minimum GPA or SAT, ACT requirement for applicants who decide to submit their standardized test results.

The University of Virginia is selective with an acceptance rate of around 19%. Students that get into University of Virginia have a SAT score between 1400-1540 or an ACT score of 32-34. Apart from this, UVA expects applicants to have achieved a minimum GPA of 3.0 in their undergraduate programs.