How many schools had positive cases over the past 2 weeks?

This morning, it was announced that 7 schools will be doing HBL from May 17 to May 28. In addition to the 7 schools, there were positive cases reported in other schools for the past 2 weeks. Not all schools have undergone an extended HBL.

There are now at least 17 Primary School Students, 1 Secondary school student and 1 JC student who tested positive for Covid-19. There are a total of 16 schools on the list. As seen, the cases have now spread around Singapore.

See map at this link 

The following schools have students tested positive for Covid-19

1 Kong Hwa School: 4 Cases 
Location: Guillemard Road

Reported on May 14 and 15
4 linked to Learning Point @ Parkway Center

2 Yio Chu Kang Primary School: 2 cases
Location: Hougang St 51

Source: ST

Reported on May 14 and 15
2 cases linked to EduFirst Learning Centre @ Hougang

3 Palm View Primary :1 case
Location: Compassvale Bow

source: JGP-Group

Reported on May 15
1 case linked to EduFirst Learning Centre @ Hougang

4 St Andrew's Junior School :3 cases
Location: Francis Thomas Dr

Source: MSN

Reported on May 14 and 15
1 case linked to Learning Point @ Parkway Centre
2 cases linked to the 1 case with links from Learning Point

5 St Margaret's Primary School :1 case
Location: Matter Road

Reported on May 15
1 case linked to Learning Point @ Parkway Centre

6 Yu Neng Primary :1 case
Location: Bedok North

Source: Yu Neng

Reported on May 15
Details not provided

7 St. Stephen's: At least 2 cases
Location:Siglap View

Source: Streetdirectory

Reported on May 14 and 15
2 cases linked to Learning Point@ Parkway Centre

1 one the student had attended Seedings World Student Care@ Frankel

8 Edgefield Secondary :1 case
Location: Punggol Pl

Screengrab: Google Map

Reported on Apr 28
Case is unlinked 

9 Victoria JC: 1 case
Location: Marine Parade

Source: Today

Reported on May 7
The case is linked to Changi Airport. The case has also been to a class at RMSS @ Parkway Centre.

10 Frontier Primary School: 1 case
Location: Jurong West

Reported on 17 May
The case is a staff that has not been linked. 

11 Fuchun Primary School :1 case
Location: Woodlands Ave

Reported on 16 May via letter to the school.

1 student who is in close contact with a confirmed case outside of school. The student had attended Step 1 Student care.

12 Maha Bodhi School: Case
Location: Ubi Ave 1

1 student who had attended Seeding World Student Care (SWSC). There was a confirmed case from SWSC earlier. The student was placed under Quarantine Order and was tested positive during quarantine. As such, close contact at school are not required to be under contact tracing.

13 Singapore Poly :3 cases
Location : Dover Road

3 student was tested positive on May 15. All lessons are moved online. 

14 Catholic High School :1 case
Location : Bishan Street

Reported May 18