def get_daycare_ratio(school_type):
	"""Return the ratio of children in daycare in different school types."""
	daycare_ratios = {
		'primary':0,
		'primary_dc':0.5,
		'lower_secondary':0,
		'lower_secondary_dc':0.38,
		'upper_secondary':0,
		'secondary':0,
		'secondary_dc':0.36
	}
	return daycare_ratios[school_type]