Disrupted schooling can heavily impact the amount of education pupils receive. Starting in early June of 2011 a huge social outburst of pupil protests, walk-outs, riots and school occupations called the Chilean Winter caused more than 8 million of lost school days. Within a matter of days, riots reached the national level with hundreds of thousands of pupils occupying schools, marching on the streets and demanding better education. Exploiting a police report on occupied schools in Santiago, I assess the effect of reduced school attendance in the context of schools occupations on pupils' cognitive achievement. This paper investigates whether or not there is a causal relationship between the protests and school occupations and the standardised test performance of those pupils whose schools were occupied.