Irregular work schedules and long hours are likely a significant barrier to many low-skilled adults who would like to participate in adult education. How much of a barrier I don’t know—this is yet another place where we are achingly lacking in data. But students dropping out of classes after being switched to a different shift, for example, is not an uncommon occurrence. It’s not the only barrier, by any means, but it’s an important one. Addressing the “upskilling” problem in anything other than a token manner will likely require significant changes in employment practices on a large scale.