这是不正确的 法律原文是这么说的
”A student may be authorized 12 months of practical training, and becomes eligible for another 12 months of practical training when he or she changes to a higher educational level.“ 8 CFR 214.2(f)(10)
所以判断的点就是JD相比LLM是否是higher educational level,这点可能有些微争议。PHD比MA高一个level则是毫无争议的,也是可再拿一次OPT的。