Hello @tali0005! My name is Lisa Krueger and I am a Khan Academy Ambassador teaching in Chicago. This is a feature that many users have requested and I know that the Khan Academy developers are aware of these requests. Please let me know if you have any further, questions, or comments. Thank you for posting.

Can you please create videos on the topics p-Block and d&f block in the chemistry section. And one more is as you have set study plan for Indian exam JEE can you also create for NEET examination its physics and chemistry part is similar to JEE but the level is quite easy.. And rest all is biology according to cbse pattern of India.  

Hello Sam ! My name is Lisa Krueger and I am a Khan Academy Ambassador teaching in Chicago. Submitting a request directly to the Khan Academy developers describing the new content you would like added would probably be better as you know exactly what you are looking for where as I am not familiar with this content. In the form choose I have a feature request or feedback for the question What are you contacting us about? and I want to request new content for the question What is your feedback or request about? Please let me know if you have any further questions, comments, or suggestions. Thank you for posting.