Table 3.

Rank-correlation between timing of DSWS survey answers across years.

	2015	2016	2017	2018	2019	2020
2015	1
2016	0.13	1
2017	0.09	0.27	1
2018	0.016	0.12	0.12	1
2019	0.013	0.04	0.02	0.01	1
2020	0.08	0.06	0.01	0.03	0.14	1

Note. Based on mode survey answers for each school.