The "best" score for Class 10 and 12 percentages, SAT/ACT scores, and TOEFL can vary depending on individual goals, the specific requirements of educational institutions or scholarship programs, and the competitiveness of the application pool. Different colleges and universities may have different expectations, and it's essential to research the specific requirements of the institutions you are interested in.

1. Class 10 and 12 Percentages:

   • Generally, a higher percentage is considered better. However, what is considered a good percentage can vary by educational board and institution.
   • Many competitive institutions may look for consistently high scores in core subjects.

2. SAT/ACT Scores:

   • The SAT and ACT are standardized tests used for college admissions in the United States.
   • What is considered a good score depends on the average scores of admitted students at the colleges you are interested in.
   • As of my last knowledge update in January 2022, a combined SAT score above 1400 (out of 1600) or an ACT composite score above 30 is often considered strong.

3. TOEFL Score:

   • The TOEFL measures English proficiency for non-native English speakers.
   • The required TOEFL score can vary by institution and program. Generally, a score above 90 is considered good, and many competitive programs may look for scores above 100.

It's crucial to understand that while these scores can be important, they are just one part of a holistic application. Other factors, such as letters of recommendation, extracurricular activities, personal statements, and sometimes interviews, also play a significant role in the admission process.

Additionally, requirements and standards may have changed since my last update, so it's recommended to check the latest admission criteria and score expectations directly from the institutions or programs you are interested in applying to. Keep in mind that different countries and educational systems may have different evaluation criteria, so it's essential to tailor your preparation and application strategy accordingly.