Students with dyslexia will not be allowed to systematically use computers and adapted software in high schools.
The Council of States narrowly rejected a motion by Valais MP Sydney Kamerzin, overturning earlier approval by the National Council.
Supporters argued the measure would close a gap, as such tools are already permitted in primary school, lower secondary and at university.
Senator Fabien Fivaz questioned why students should lose access at a crucial stage.
Opponents in the upper chamber ultimately blocked the proposal by 21 votes to 19.
Lausanne bike shelters get an upgrade
Cook from Vaud goes global
Lake Zurich at record low
Ticks more prevalent in Switzerland
Winter flu wave expected
Cross border gun burglaries
