Why More Parents Are Delaying Kindergarten—But Is It Worth It?
More parents are choosing to delay their child's start in kindergarten, but the long-term benefits remain uncertain. New data shows that wealthier families are far more likely to hold children back, while rates vary by gender and birth month. Meanwhile, policies like California's transitional kindergarten are adding to the debate over when children should begin school. Between the 1990s and today, around 4.5% to 7% of parents have opted to delay kindergarten for their 5-year-olds. Boys are held back more often than girls, and two-thirds of these children have summer birthdays between June and August. Research suggests that any early academic advantage for older students tends to fade by third grade.
In Germany, rates of delayed school entry and grade retention have slightly declined over the past decade, dropping from 2–3% to 1.5–2%. This shift is largely due to better early detection of developmental needs. In the US, however, retention rates for social-emotional or developmental delays have remained steady at 3–5%, with higher figures in low-income areas. While some children with developmental delays or behavioural readiness issues may benefit from an extra year, studies indicate that long-term advantages are minimal. Additionally, delayed entry has been linked to a higher risk of dropping out later. California's recent expansion of transitional kindergarten (TK) has further complicated parents' decisions, as they weigh whether an extra year will truly help their child.
The decision to delay kindergarten remains more common among affluent families, with 6.8% of higher-income children held back in 2025 compared to just 3.2% from low-income backgrounds. While short-term gains may appear, evidence suggests these benefits rarely last. Parents now face even more factors to consider, from birth month to new educational programmes.
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