Campaign: {
      Id: 'Id',
      Name: 'String',
      ParentId: null || CampaignId of a parent
      StartDate: 'Date', //not DateTime
    }
    Contact: {
      Id: 'Id',
      FirstName: 'String',
      LastName: 'String',
      SchooldId: 'schoolId unique to each person'
    }

    CampaignMember: {
      Id: 'Id',
      CampaignId: 'Id from Campaign',
      ContactId: 'Id from Contact',
      Attendance__c: 'String one of below
                      Paid||UnPaid||NoShow||Void||Attended||Registered'
    }

Contact
Kate Smith

Addresses
A-12345

Campaign History
     Campaign Name   Start Date     Type     Attendance
     Spring 2019     1/1/2019       Test     Paid
     session 1       3/25/2019      Test     Void
     session 2       4/15/2019      Test     No Show