Mainly, discussion board posts are limited to 1 page. This limit varies from 150 to 250 words maximum. Let's be fair, there are no common requirements for discussion board posts. Initial DBPs are mostly longer and can include up to 250 words and sometimes even 300 words. However, response DBPs, which respond to someone's initial DBP, usually vary from 100 to 150 words. Every DBP is unique and depends on the professor's requirements.