14. LEASES

The Group has operating leases for classrooms, dormitories, corporate offices and certain equipment; and finance lease for a teaching building used by Shenyang K-12 School. For the finance lease, all lease payments have been paid to the landlord from the commencement date of the lease.

The components of lease expense were as follows:

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Supplemental cash flow information related to leases was as follows:

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Supplemental balance sheet information related to leases was as follows:

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The Group’s lease agreements do not have a discount rate that is readily determinable. The incremental borrowing rate is determined at lease commencement or lease modification and represents the rate of interest the Group would have to pay to borrow on a collateralized basis over a similar term and amount equal to the lease payments in a similar economic environment. The weighted-average discount rate was calculated using the discount rate for the lease that was used to calculate the lease liability balance for each lease and the remaining balance of the lease payments for each lease as of June 30, 2022 and 2021, respectively.

The weighted-average remaining lease terms were calculated using the remaining lease term and the lease liability balance for each lease as of June 30, 2022 and 2021, respectively.

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As of June 30, 2022, maturities of lease liabilities were as follows:

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As of June 30, 2022, the Group had no material operating or finance leases that had not yet commenced.

Sublease

The Group subleases dormitories and offices to third parties under operating leases. Sublease income are recorded as a reduction of lease expense in the consolidated statements of operations.

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For the six months ended June 30, 2022 and 2021, gross sublease income of the Group was RMB nil and RMB 42, respectively.