Production began in 2001 and finished in 2013, with Linklater's goal to make a film about growing up. The project began without a completed script, with only basic plot points and the ending written initially. Linklater developed the script throughout production, writing the next year's portion of the film after rewatching the previous year's footage. He incorporated changes he saw in each actor into the script, while also allowing all major actors to participate in the writing process by incorporating their life experiences into their characters' stories.