Why would a defense attorney either choose to have their client testify or not testify?

To prove a certain narrative that will help them win the case

Explanation:

If they have them testify they most likely can use what they say to help their case

Vice Versa

If they don't they probably have something that well help the opposing team

on june 23, 1972, the president signed title ix of the education amendments of 1972, 20 u.s.c. into law. title ix is a comprehensive federal law that prohibits discrimination on the basis of sex in any federally funded education program or activity.

the numbers are even higher.

explanation:

statistics have shown that more that 60% of test takers fail the first time and have to retake the test.