Table 2.

School participation rates and estimated learning rates for Welsh and te reo Māori. Columns 1 and 2 shows rates of participation in language learning in English-medium school and in language-immersion schools. Columns 3 and 4 show estimated learning rate parameters for the model. Estimated learning rates for Wales are obtain by fitting the model to data of changes in proficiency levels over time; estimated learning rates for New Zealand are derived from the Welsh estimates using the relative school participation rates. References for participation rate data: New Zealand [63]; Wales [16].

	language learning in English-medium school (%)	language immersion school (%)	estimated learning rates (yr−1)
			${\beta }_{\mathrm{BI}}$	${\beta }_{\mathrm{IP}}$
Welsh	78	22	0.0510	0.0969
Te reo Māori (Māori)	31.3	9.6	0.0205	0.0423
Te reo Māori (overall)	21.1	2.5	0.0138	0.0016