Undergraduate:

SAT: Scholastic Assessment Test (Total mark: 1600):
https://satsuite.collegeboard.org/sat

ACT American College Testing (Total marks 36)
https://www.act.org/content/act/en/products-and-services/the-act/registration.html

Medical & Dentistry UG: UK Clinical Aptitude Test (UCAT): The UCAT is a computer-based test, delivered in Pearson VUE test centers throughout the UK and worldwide.
https://www.ucat.ac.uk/

United States Medical Licensing Examination (USMLE): Take the Next Step on Your Journey to Medical Licensure
https://www.usmle.org/

The Medical College Admission Test (MCAT):
https://students-residents.aamc.org/taking-mcat-exam/taking-mcat-exam

AP Exams
https://apstudents.collegeboard.org/ap-exams-overview

Postgraduate:

GMAT (total Marks 800): Students aspiring to do Masters or MBA in any business related programs should appear for GMAT.
https://www.mba.com/exams/gmat-exam

GRE (total Marks 340): Students aspiring to pursue Masters in any STEM related programs must appear for GRE (Science, Tech, Engineering & Mathematics).
https://www.ets.org/gre.html

English Proficiency Test:

IELTS (total bands 9.0): International English Language Testing System
https://www.ielts.org/

TOEFL (total marks 120): Test of English as a Foreign Language
https://www.ets.org/toefl.html

PTE (total marks 90): Pearson Testing English
https://www.pearsonpte.com/

Duolingo DET total marks on the scale of 10-160
https://englishtest.duolingo.com/applicants