NGSS or the khan academy courses which one to choose.

Hi Yikang,

The NGSS Biology course is aligned with the Next Generation Science Standards and is currently designed to be used as a supplement in NGSS classrooms and not as a standalone course. If you are enrolled in an NGSS-aligned course in your school district, then this would be a good choice for you. If not, then I recommend taking the standard High School Biology course instead.

You can find more information about the NGSS courses here: https://support.khanacademy.org/hc/en-us/articles/4406030883725

Please let me know if you have any further questions!