2. schul-frei
3. schul-frei.dev
4. Englisch
5. Zen

However, estimating the necessary server resources is difficult. Schools cannot always make a good estimation how many learners will be using their platform simultaneously, but do not want to hit capacity limits either under full use. Moreover, other not easily estimatable use cases, like open days, add up to that and need more resources than usual.

This flexibility was not possible under strict separation of instances per school. While measuring loads of only 50 to 60 percent under regular use, we could provide for short-term peaks like public events like open days or public trainings only through vertical scaling, which had to be paid by the single institution.

During the winter holidays 2020/2021, we therefore replaced this model with a solidary one, in consentaneous coordination with the involved organisations. In this model, we operate all BigBlueButton servers in one pool rather than separated by institution. This pool can, much like our public instance we had from the start, be used by the general public. Insitutions can still reserve resources. On such a reservation, we resize the pool to fit the newly reserved resources. The instituion continues to get their own frontend under their own domain, and, on request, also their own API token that grants them limited access to only their own meetings and participants. The reserved resources are then complemented by 10% from our own budget for solidary use.

Thanks to this model, we currently provide resources for approximately 2500 simultaneous users, 2200 of which are reserved by educational institutions who finance them and that can primarily be used by them alone. At the same time, one-time meetings, private meetups of children and adolescents or weekend events like barcamps and hackathons can be provided for without additional effort.

We thank all institutions that agreed to the solidary hosting and thus open up free platforms firstand foremost to their own, but also all other learners. Requests for reserved resourcen can be directed to us [by e-mail](mailto:schulsupport@teckids.org).

Thomas-Krenn-Award: Teckids takes second place!

The virtual <a href="http://openeducationday.ch/"> Open Education (Half-)Day </a> (OED) took place on April 25, 2020. At the OED, people interested in Free Software and Open Educational Resources can meet and exchange ideas. We were proud to host the conference's online platform.

The OED usually takes place in Switzerland and is offered by various organisations, especially the association <a href="https://www.ch-open.ch/"> CH Open </a> . However, due to the current situation, it could not take place there. That's why it took place online. For this purpose, we have provided our service <a href="http://bbb.teckids.org"> BigBlueButton </a> . Using the platform's various functions, the speakers were able to present their content and also interact with the 200-odd participants of the conference.

Over the course of three hours, the guests were able to participate in various keynotes and workshops. We also participated with a keynote, in which we presented the <a href="https://schul-frei.org/"> schul-frei </a> project and were able to share the ideas behind it with the participants. Some of our junior members also participated in the lecture and were able to inspire some listeners. The recordings of the lectures and workshops can be found <a href="https://tube.switch.ch/channels/7cff677c"> here </a> and their slides can be found <a href="https://openeducationday.ch/bisherige_events/"> here </a> .

2020-04-01

Maintenance work in the data center

On Friday, April 3rd, 2020, from 1:30 p.m., we will carry out work in the data center. Our services may be unavailable.

Kirill Schmidt

COVID-19 - Open access services for online teaching

Due to the spread of COVID-19, schools are being closed across the board and teachers and pupils are going to have to communicate via the Internet. Here we list free tools that can be used by teachers to create a remote teaching environment for a class.

1. Jitsi Meet