A new report from the American Institutes of Research shows that young children have up to five months of learning advantage compared with children who don’t get an extra year of kindergarten. But the report — Impact of California’s Transitional Kindergarten Program, 2013-14 — also points out that there’s a long way to go in funding the pre-school program...

The architects are huddled in an intense meeting. Problems have arisen: the supports for the tower appear insufficient, causing balance issues. Should they proceed with the plans they’ve envisioned or make modifications for a less ambitious approach? The leader is unequivocal: the vision will be executed. His team shrugs, then proceeds in accordance with the...