A teenage girl was ordered to scratch a word on to her arm with broken glass by a hooded man.
And just days later two younger schoolgirls were chased by a man who had been hiding in bushes on the same pathway.
Police are not linking the two incidents but the parents of the youngsters want other people to be aware of the danger.
Jodie Foy, 16, was walking home from Bedford High School down a footpath off Manchester Road to her home on Kensington Drive, Higher Folds, when she was approached by a male wearing a black balaclava.
She says the man ordered her to stop, put her blazer over her head and continue walking before telling her to sit down on the floor and scratch the word 'love' onto her arm with a piece of broken glass.
The sickening attack at around 12.15pm on Monday, April 23 lasted for an hour before Jodie was able to escape.
The attacker did not touch his victim at any time during the attack.
But Sharon Foy, Jodie's mum, said: "We have had a flasher round here who was seen wearing nothing but boots.
"My worry is that this could be the same man who has moved on from doing that and now has now plucked up the nerve to start doing this. The next step could even be a serious sexual attack or even rape."
On May 3, 12-year-old Chantelle McIrvenna, from Kensington Drive, and a female friend of the same age were walking home from Bedford High School along the same footpath shortly after 3.15pm.
They were chased by a man wearing a black hoodie after they had seen him hiding in bushes next to the path.
Janine Prater, Chantelle's mum, said: "Chantelle was very shaken up and she doesn't go to or from school on her own any more.
"They heard a rustling in the bushes and looked back to see a head bobbing up and down. He chased them down the path but stopped when he heard a family in the field up ahead. His hood came down while he was chasing them and they saw he was bald."
A spokesperson for Greater Manchester Police said: "Police are investigating an incident that happened in Leigh at around 12.15pm on Monday, April 23.
"Detectives are appealing for anyone with information regarding this incident to come forward, in particular a male walking his dog who Jodie saw as she ran away.
"A separate investigation into two girls being followed home from school is also ongoing but, at this stage, there is nothing to suggest that these two incidents are linked."
The man who attacked Jodie was wearing a black balaclava and is described as white, 5ft 10in tall, of thin build and wearing black trousers. He spoke with a local accent.
Anyone with information on either incident is asked to call Leigh CID on 0161 856 5307 or Crimestoppers, anonymously, on 0800 555 111.