p1 = Project.find_or_create_by!(name: 'First Project')
p2 = Project.find_or_create_by!(name: 'Second Project')
p3 = Project.find_or_create_by!(name: 'Third Project')

s1 = Student.find_or_create_by!(name: 'First Student') do |s|
  s.project = p1
end
s2 = Student.find_or_create_by!(name: 'Second Student') do |s|
  s.project = p1
end
s3 = Student.find_or_create_by!(name: 'Third Student') do |s|
  s.project = p2
end

t1 = Teacher.find_or_create_by!(name: 'First Teacher') do |t|
  s.project = p1
end
t2 = Teacher.find_or_create_by!(name: 'Second Teacher') do |t|
  s.project = p2
end
t3 = Teacher.find_or_create_by!(name: 'Third Teacher') do |t|
  s.project = p2
end

st1 = Story.find_or_create_by!(name: 'First Story') do |st|
  s.project = p1
end
st2 = Story.find_or_create_by!(name: 'Second Story') do |st|
  s.project = p1
end
st3 = Story.find_or_create_by!(name: 'Third Story') do |st|
  s.project = p2
end