Is this chroot setup safe?

About chroot again, jailing users to home directory :)

So, I'm just wondering if this setup is safe:

• server is only used for websites (no email etc.)
• home directory paths are defaults (/home/$USER)
• users are added to "sftponly" group
• sshd_config:

• users home directory owner/group is root/root and chmod 755 (other users can see home directory content)
• users can't create files/folder inside home directory, but they have "private" directory where they can put anything that needs to be outside of web root (public_html)
• folders inside home directory are 750, so other users can only see home directory content, not content from folders inside home directory

Thanks for any comments!