Web accessibility training for developers
Providing small training sessions to developers and/or designers and talking about accessibility, explaining what it is, and changing their perspective of it.
Providing training sessions for web developers on how to use tools to find accessibility issues.
Providing training sessions for non-designers and non-developers and helping all members of the team to learn about inclusive design and accessible websites.
Coding guidelines
Providing guidance to developers on how to code. Either by providing simple examples they can replicate in their more complex work or by writing documentation for them to follow.
Some examples
Making the knowledge 'stick' can be difficult. We have numerous ways of doing so. Interactive quizzes are one way for developers to better understanding the techniques like how/when to use ARIA.