If you feel that you need to improve your level in Spanish, here you find some links of schools and courses that might be of interest to you:

• Universidad Complutense of Madrid (UCM) offers Spanish courses for foreign students in the Faculty of Philology at the Complutense Center for Spanish (CCEE):

https://ucm.es/ccee/cursos-on-line-1

https://www.ucm.es/ccee/presentacion-ingles

• Other universities in Madrid also offer Spanish courses for foreign students:

Universidad Politécnica: https://www.lenguas.upm.es/2020/05/27/cursos-de-espanol/

Universidad de Alcalá: https://www.alcalingua.com/es and https://www.alcalingua.com/es/cursos/sistema-virtual-ele-clases-vivo

Universidad Española a Distancia (UNED): http://portal.uned.es/portal/page?_pageid=93,70607228&_dad=portal&_schema=PORTAL

Universidad Nebrija: https://www.hispanicosnebrija.com/en/nebrija-university/examination-center/

• Language Schools in Madrid:

Instituto Cervantes: https://examenes.cervantes.es/es/dele/cursos-y-recursos/cursos

International House: https://www.ihmadrid.com/category/spanish-courses-in-madrid

Don Quijote: https://www.donquijote.org/learn-spanish-spain/madrid/