The phrase "a network of groups" is correct and usable in written English.
It can be used to describe a system or collection of interconnected organizations or entities that collaborate or share resources.
Example: "The conference brought together a network of groups focused on environmental sustainability to share their research and strategies."
Alternatives: "a coalition of organizations" or "an alliance of entities".
Student Run Self Help (SRSH) is a network of groups run by trained students in many universities across the UK.
On the site, the group is described as a network of groups and individuals concerned about "the growth of corporate power and the direction of globalization".
@idsnupdates Rikke is head of IDSN, a network of groups in India, Nepal, Bangladesh and Pakistan working on a global level to eradicate caste discrimination.
Mr Choudary was accused in November of running a network of groups that was the "single biggest gateway to terrorism in recent British history" in a report.
Setting up such a network of groups is very labour intensive and Care International is working through a local Ugandan community organisation called Uweso (Uganda Women's Efforts to Save Orphans).
Banking on Change, for example, is working towards creating a network of groups in Egypt that will allow members to pool their savings and gain access to formal financial institutions.
Burr's last-minute objection to a bill that has been nearly two years in the works came after an outcry from a network of group homes in his state, the Baptist Children's Homes of North Carolina.
In Chicago, a network of nonprofit groups has started The Depression Project, a network of community groups helping aging immigrants and others cope.
The group sought to unload that money through a network of conservative groups run by political operatives connected to the Koch brothers.
The committees are a network of local groups tracking the Syrian protests.
Emma Williams, director of Student Action for Refugees, a network of student groups, says increasing numbers of universities have agreed to class these students as home students.
